Thinking Mathematically (6th Edition)

by
Blitzer, Robert F.

Published by
Pearson

ISBN 10:
0321867327

ISBN 13:
978-0-32186-732-2

Chapter 2 - Set Theory - 2.5 Survey Problems - Exercise Set 2.5: 15

Answer

The number of elements in set A or set C = 28

Work Step by Step

From the given Venn diagram,
the regions I, II, IV, V. VI. VII belongs to set A or set C.
It's given from the Venn diagram that,
The number of elements belongs to region I = 5
The number of elements belongs to region II = 1
The number of elements belongs to region IV = 2
The number of elements belongs to region V = 7
The number of elements belongs to region VI = 3
The number of elements belongs to region VII = 10
Therefore the number of elements in set A or set C = 5 + 1 + 2 + 7 + 3 + 10 = 28.